A012250 - cp's OEIS frontend

A012250 a(n) = A012249(2n) / 2^(2n-1).

n	a(n)
1	1
2	3
3	40
4	1225
5	67956
6	5986134
7	769550496
8	136151219061
9	31753157473180
10	9445432588519642
11	3491687484842443536
12	1570713950508131878618
13	845034544811095556274280
14	535857105694970626486925100
15	395590680969537758258609408640
16	336386798400777928783348084420365

[1, 3, 40, 1225, 67956, 5986134, 769550496, 136151219061, 31753157473180, 9445432588519642, 3491687484842443536, 1570713950508131878618, 845034544811095556274280, 535857105694970626486925100, 395590680969537758258609408640, 336386798400777928783348084420365]

cp's OEIS Frontend

A012250 a(n) = A012249(2n) / 2^(2n-1).

Table of values

List of values

cp's OEIS Frontend

A012250 a(n) = A012249(2*n) / 2^(2*n-1).

Table of values

List of values

A012250 a(n) = A012249(2n) / 2^(2n-1).