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A173407
Partial sums of A002106.
0
1, 2, 4, 9, 14, 30, 37, 87, 121, 166, 174, 475, 484, 547, 651, 2605, 2615, 3598, 3606, 4723, 4887, 4946, 4953, 29953, 30164, 30260, 32652, 34506, 34514, 40226, 40238, 2841562, 2841724, 2841839, 2842246, 2963525, 2963536, 2963612, 2963918, 3279760, 3279770, 3289261, 3289271, 3291384, 3302307, 3302363, 3302369
OFFSET
1,2
COMMENTS
Partial sums of number of transitive permutation groups of degree n. The subsequence of primes in this partial sum begins: 2, 37, 547, 4723. The subsequence of squares in this partial sum begins: 1, 4, 9, 121, 484.
FORMULA
a(n) = Sum_{i=1..n} A002106(i).
MATHEMATICA
Cases[Import["https://oeis.org/A002106/b002106.txt", "Table"], {_, _}][[All, 2]] // Accumulate (* Jean-François Alcover, Jan 03 2020 *)
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Jonathan Vos Post, Feb 17 2010
EXTENSIONS
More terms from Jinyuan Wang, Feb 23 2020
More terms from Vaclav Kotesovec, Jul 18 2022
STATUS
approved