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T08

T_{8}(n,k)= k + \binom{k}{2}(n-k)

TriangleForm
0  
0 1  
0 1 2  
0 1 3 3  
0 1 4 6 4  
0 1 5 9 10 5  
0 1 6 12 16 15 6
sum als gcd lcm
0 0 0 1
1 1 0 1
3 1 2 2
7 1 3 3
15 1 2 12
30 0 1 90
56 0 1 240
RectangleForm
0 0 0 0 0 0 0
1 1 1 1 1 1 1
2 3 4 5 6 7 8
3 6 9 12 15 18 21
4 10 16 22 28 34 40
5 15 25 35 45 55 65
6 21 36 51 66 81 96
Fingerprint
SubSeqType 0 1 2 3
Row A000004 A000012 A000027 A008585
Column A001477 A000217 A000290 A000326
DiagRow A006000 A064808 A060354 A072277
DiagColumn A006000 A006003 A002411 A127736
Characteristic SUM ALS LCM GCD
Sequence A055795 A000000 A000000 A000000

Maple T08 := proc(n, k) binomial(k, 2)*(n - k) + k end:

TeX T_{8}(n,k)= k + \binom{k}{2}(n-k)