This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A073430 Upper triangular region of the table A073346. 3
 1, 1, 0, 0, 2, 0, 1, 0, 4, 0, 0, 2, 4, 8, 0, 0, 2, 8, 16, 16, 0, 0, 0, 12, 40, 48, 32, 0, 1, 0, 12, 80, 144, 128, 64, 0, 0, 2, 12, 136, 384, 448, 320, 128, 0, 0, 2, 12, 224, 912, 1408, 1280, 768, 256, 0, 0, 0, 20, 328, 2048, 4096, 4544, 3456, 1792, 512, 0, 0, 2, 16, 480, 4336 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 LINKS MAPLE A073430 := n -> A073346bi(A003056(n), A002262(n)); A002262 := n -> n - binomial(floor((1/2)+sqrt(2*(1+n))), 2); A003056 := n -> floor(sqrt(2*(1+n))-(1/2)); CROSSREFS Sequence in context: A086780 A158612 A143782 * A053389 A202328 A136688 Adjacent sequences:  A073427 A073428 A073429 * A073431 A073432 A073433 KEYWORD nonn,tabl AUTHOR Antti Karttunen, Jul 31 2002 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 16 16:18 EDT 2019. Contains 328101 sequences. (Running on oeis4.)