login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A030756 Numbers k such that A030747(k)=4. 0
1, 11, 28, 38, 60, 88, 91, 107, 109, 131, 153, 206, 267, 302, 379, 429, 477, 518, 522, 527, 570, 572, 580, 633, 637, 692, 747, 755, 760, 826, 889, 892, 897, 957, 971, 1021, 1035, 1041, 1043, 1046, 1114, 1115, 1203, 1207, 1291, 1362, 1369, 1382, 1467, 1469 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Sequence in context: A212776 A137019 A122929 * A065006 A291058 A061952

Adjacent sequences:  A030753 A030754 A030755 * A030757 A030758 A030759

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Apr 08 2020

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 1 10:04 EST 2021. Contains 349426 sequences. (Running on oeis4.)