A344262 - cp's OEIS frontend

A344262 a(0)=1; for n>0, a(n) = a(n-1)n+1 if n is even, (a(n-1)+1)n otherwise.

n	a(n)
0	1
1	2
2	5
3	18
4	73
5	370
6	2221
7	15554
8	124433
9	1119906
10	11199061
11	123189682
12	1478276185
13	19217590418
14	269046265853
15	4035693987810
16	64571103804961
17	1097708764684354
18	19758757764318373
19	375416397522049106
20	7508327950440982121
21	157674886959260624562

[1, 2, 5, 18, 73, 370, 2221, 15554, 124433, 1119906, 11199061, 123189682, 1478276185, 19217590418, 269046265853, 4035693987810, 64571103804961, 1097708764684354, 19758757764318373, 375416397522049106, 7508327950440982121, 157674886959260624562]

cp's OEIS Frontend

A344262 a(0)=1; for n>0, a(n) = a(n-1)n+1 if n is even, (a(n-1)+1)n otherwise.

Table of values

List of values

cp's OEIS Frontend

A344262 a(0)=1; for n>0, a(n) = a(n-1)*n+1 if n is even, (a(n-1)+1)*n otherwise.

Table of values

List of values

A344262 a(0)=1; for n>0, a(n) = a(n-1)n+1 if n is even, (a(n-1)+1)n otherwise.