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A114178
Central terms of triangle A114176 found in even-indexed rows.
2
1, 3, 18, 135, 1083, 9219, 80631, 724080, 6601639, 61065270, 570430258, 5376309654, 51020229343, 487127706521, 4674459993450, 45056351087502, 435965482847738, 4232871507349381, 41222355832803426, 402540756184423291
OFFSET
0,2
CROSSREFS
Cf. A114176, A114177 (row sums), A114179 (row sums-square).
Sequence in context: A355103 A355105 A095776 * A005159 A151383 A177406
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Nov 15 2005
STATUS
approved