Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A139796
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A139796 Last term of A139687(n) with a fourth leading 1 = 1, 1, 1, 1, 2, 2, 1, 3, 5, 5 rows. +0
1
1, 1, 2, 5, 9, 28, 48, 165, 275, 1001, 1638, 6188 (list; graph; listen)
OFFSET

0,3

COMMENT

Based on sequences identical to their p-th differences.

FORMULA

Odd rows are 1; 1, 2, 2; 1, 3, 6, 9, 9; 1, 4, 10, 20, 34, 48, 48; 1, 5, 15, 35, 70, 125, 200, 275, 275; 1, 6, 21, 56, 126, 252, 461, 780, 1209, 1638, 1638; with respective sums second bisection a(2n+1)= 1, 5, 28, 165, 1001, 6188 = A025174(n+1)?

CROSSREFS

Cf. A094600.

Adjacent sequences: A139793 A139794 A139795 this_sequence A139797 A139798 A139799

Sequence in context: A109742 A072979 A094600 this_sequence A086586 A105456 A128565

KEYWORD

nonn,uned

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Jun 14 2008

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 8 20:39 EST 2009. Contains 166234 sequences.


AT&T Labs Research