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A340520 a(n) = 2*A006463(n) + 1. 1
1, 3, 5, 9, 13, 17, 23, 29, 35, 41, 49, 57, 65, 73, 81, 91, 101, 111, 121, 131, 141, 153, 165, 177, 189, 201, 213, 225, 239, 253, 267, 281, 295, 309, 323, 337, 353, 369, 385, 401, 417, 433, 449, 465, 481, 499, 517, 535, 553, 571, 589, 607, 625, 643, 661, 681, 701, 721, 741, 761, 781, 801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Index of start of row n in b-files for triangles (such as A237593, A262045) where the rows have length 2*A003056(n).

LINKS

Hugo Pfoertner, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A003056, A006463, A237593, A262045.

Sequence in context: A123509 A196094 A063915 * A183859 A096228 A185170

Adjacent sequences:  A340517 A340518 A340519 * A340521 A340522 A340523

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 04 2021

STATUS

approved

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Last modified June 19 15:47 EDT 2021. Contains 345142 sequences. (Running on oeis4.)