A359810 Partial sums of A001035.

1, 2, 5, 24, 243, 4474, 134497, 6264356, 437987735, 44949030246, 6656014279029, 1402937691384928, 416267888747238427, 172266996270334297778, 98656591253398541329961, 77665827611694086894379900, 83558195613101851900738636479, 122236099445908424714842019905630, 242061628696647085027612662167990653

Offset

0,2

Comments

Since the number of partial orders is always odd, a(n) alternates in parity.

Links

Table of n, a(n) for n=0..18.

Example

a(2) = 1 + 1 + 3 = 5.

Crossrefs

Cf. A001035, A354847.

Sequence in context: A331035 A052808 A137157 * A025134 A340772 A370066

Adjacent sequences: A359807 A359808 A359809 * A359811 A359812 A359813

Keyword

nonn

Author

Firdous Ahmad Mala, Jan 13 2023

Status

approved