A026379 - cp's OEIS frontend

A026379 a(n) = number of integer strings s(0),...,s(n) counted by array T in A026374 that have s(n)=3; also a(n) = T(2n-1,n-2).

n	a(n)
2	1
3	7
4	39
5	202
6	1015
7	5028
8	24731
9	121208
10	593019
11	2899335
12	14173401
13	69301422
14	338990145
15	1659037695
16	8124085575
17	39806373880
18	195160896835
19	957396540285
20	4699409632805
21	23080158080150
22	113414575414245
23	557601196738190

[1, 7, 39, 202, 1015, 5028, 24731, 121208, 593019, 2899335, 14173401, 69301422, 338990145, 1659037695, 8124085575, 39806373880, 195160896835, 957396540285, 4699409632805, 23080158080150, 113414575414245, 557601196738190]

cp's OEIS Frontend

A026379 a(n) = number of integer strings s(0),...,s(n) counted by array T in A026374 that have s(n)=3; also a(n) = T(2n-1,n-2).

Table of values

List of values