A087617 - cp's OEIS frontend

A087617 Gabcke sequence: a(0)=1; (n+1) a(n+1) = Sum_{k=0..n} 2^(4k+1) |E(2k+2)| a(n-k), where |E(2k+2)| are Euler numbers (E(2k)=(-1)^k A000364(k)).

n	a(n)
0	1
1	2
2	82
3	10572
4	2860662
5	1330910844
6	947622146676
7	957663025230936
8	1303349182536886566
9	2298001401440208011756
10	5095053865489946980238428
11	13874003700656227505945514920
12	45517269584820569745186971856060

[1, 2, 82, 10572, 2860662, 1330910844, 947622146676, 957663025230936, 1303349182536886566, 2298001401440208011756, 5095053865489946980238428, 13874003700656227505945514920, 45517269584820569745186971856060]

cp's OEIS Frontend

A087617 Gabcke sequence: a(0)=1; (n+1) a(n+1) = Sum_{k=0..n} 2^(4k+1) |E(2k+2)| a(n-k), where |E(2k+2)| are Euler numbers (E(2k)=(-1)^k A000364(k)).

Table of values

List of values