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A048221
a(n)=T(2n-1,n), array T given by A048212.
0
2, 5, 18, 35, 60, 94, 134, 180, 232, 291, 357, 430, 515, 610, 710, 815, 932, 1053, 1181, 1318, 1462, 1615, 1776, 1944, 2116, 2300, 2496, 2696, 2907, 3128, 3351, 3581, 3817, 4062, 4318, 4582, 4852, 5131, 5419, 5719, 6031, 6346, 6665, 6991, 7323, 7665, 8015
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..47.
FORMULA
a(n) = A004979(2*n) - A004979(n). - Sean A. Irvine, Jun 05 2021
CROSSREFS
Cf. A004979.
Sequence in context: A288994 A226141 A355515 * A183365 A295905 A056296
Adjacent sequences: A048218 A048219 A048220 * A048222 A048223 A048224
KEYWORD
nonn
AUTHOR
Clark Kimberling
EXTENSIONS
More terms from Sean A. Irvine, Jun 05 2021
STATUS
approved

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Last modified November 7 12:11 EST 2024. Contains 377535 sequences.
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