A349972 a(n) = A349976(n, n-1) for n >= 1 and a(0) = 0.

0, 1, 2, 3, 2, 8, 10, 25, 49, 93, 187, 377, 747, 1472, 2975, 5911, 11880, 23734, 47474, 94885, 190623, 380805, 763402, 1528095, 3061916, 6125358, 12278446, 24564954, 49200792, 98478615, 197164774, 394536002, 789993459, 1580640910, 3163602123, 6330608624, 12668987317

Offset

0,3

Links

Fausto A. C. Cariboni, Table of n, a(n) for n = 0..47

Prog

(SageMath) # Uses function DistsetLength from A349976.
from collections import Counter
def A349972(n): return Counter([DistsetLength(s) for s in Subsets(n)])[n-1]
print([A349972(n) for n in range(10)])

Crossrefs

Cf. A349976.

Sequence in context: A057761 A321477 A209998 * A163204 A364895 A299619

Adjacent sequences: A349969 A349970 A349971 * A349973 A349974 A349975

Keyword

nonn

Author

Peter Luschny, Dec 12 2021

Status

approved