login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A024954
a(n) = s(n+3)/6, where s is A024953.
0
1, 1, 7, 13, 19, 61, 145, 301, 745, 1729, 4915, 11737, 28675, 73945, 200545, 513265, 1272385, 3303745, 8918911, 23137501, 59225587, 155387413, 420267097, 1104554845, 2876555737, 7574538529, 20668692859, 54731279065, 143892912259, 383051857489
OFFSET
1,3
CROSSREFS
Sequence in context: A144232 A154756 A024732 * A373544 A070850 A060211
KEYWORD
nonn
STATUS
approved