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A120902
Row sums of triangle A120898 (cascadence of 1+2x+x^2).
4
1, 5, 23, 103, 450, 1932, 8196, 34468, 143997, 598463, 2476936, 10216818, 42023225, 172436363, 706132290, 2886574198, 11781962631, 48025519977, 195530083266, 795241236228, 3231290822280, 13118557603984, 53218706064038
OFFSET
0,2
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Jul 14 2006
STATUS
approved