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A350104
a(n) = Sum_{k=0..n} A350102(k).
0
1, 3, 6, 11, 18, 28, 40, 56, 74, 96, 121, 150, 181, 218, 257, 300, 347, 399, 453, 513, 575, 643, 715, 791, 869, 955, 1044, 1137, 1234, 1337, 1442, 1555, 1670, 1791, 1916, 2045, 2178, 2320, 2464, 2612, 2764, 2924, 3086, 3256, 3428, 3606, 3790, 3978, 4168, 4368
OFFSET
0,2
PROG
(SageMath)
def A350104List(len):
L = [1] * len
a, b = 1, 2
for n in (2..len):
a += b
b += sloane.A000005(n - 1)
L[n - 1] = a
return L
print(A350104List(50))
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Luschny, Dec 16 2021
STATUS
approved