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A205136
Ordered differences of distinct pentagonal numbers.
2
4, 11, 7, 21, 17, 10, 34, 30, 23, 13, 50, 46, 39, 29, 16, 69, 65, 58, 48, 35, 19, 91, 87, 80, 70, 57, 41, 22, 116, 112, 105, 95, 82, 66, 47, 25, 144, 140, 133, 123, 110, 94, 75, 53, 28, 175, 171, 164, 154, 141, 125, 106, 84, 59, 31, 209, 205, 198, 188, 175
OFFSET
1,1
COMMENTS
For a guide to related sequences, see A204892.
EXAMPLE
a(1)=s(2)-s(1)=5-1=4
a(2)=s(3)-s(1)=12-1=11
a(3)=s(3)-s(2)=12-5=7
a(4)=s(4)-s(1)=22-1=21
a(5)=s(4)-s(2)=22-5=17
MATHEMATICA
(See the program at A205138.)
CROSSREFS
Sequence in context: A269742 A151873 A354274 * A096735 A211458 A222284
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 25 2012
STATUS
approved