A276340 Shift left the greedy A001563-base (A276326) representation of n (append 0 to the right, then convert back to decimal).

0, 4, 8, 12, 18, 22, 26, 30, 36, 40, 44, 48, 54, 58, 62, 66, 72, 76, 96, 100, 104, 108, 114, 118, 122, 126, 132, 136, 140, 144, 150, 154, 158, 162, 168, 172, 192, 196, 200, 204, 210, 214, 218, 222, 228, 232, 236, 240, 246, 250, 254, 258, 264, 268, 288, 292, 296, 300, 306, 310, 314, 318, 324, 328, 332, 336, 342, 346, 350, 354, 360

Offset

0,2

Links

Antti Karttunen, Table of n, a(n) for n = 0..4320

Formula

a(0) = 0; for n >= 1, a(n) = A276338(n) + a(A276335(n)).

Other identities:

a(A001563(n)) = A001563(n+1) for all n >= 1.

Example

   n   A276326  with one zero           converted back
                appended to the right   to decimal = a(n)
---------------------------------------------------------
   0       0            00                     0
   1       1            10                     4
   2       2            20                     8
   3       3            30                    12
   4      10           100                    18
   5      11           110                    22
   6      12           120                    26
   7      13           130                    30
   8      20           200                    36
   9      21           210                    40
  10      22           220                    44
  11      23           230                    48
  12      30           300                    54
  13      31           310                    58
  14      32           320                    62
  15      33           330                    66
  16      40           400                    72
  17      41           410                    76
  18     100          1000                    96

Prog

(Scheme) (definec (A276340 n) (if (zero? n) n (+ (A276338 n) (A276340 (A276335 n)))))

Crossrefs

Cf. A276341 (complement).

Cf. A001563, A276326, A276335, A276338, A276339.

Cf. also A153880, A255411, A276091.

Sequence in context: A311591 A311592 A311593 * A311594 A311595 A311596

Adjacent sequences: A276337 A276338 A276339 * A276341 A276342 A276343

Keyword

nonn,base

Author

Antti Karttunen, Sep 01 2016

Status

approved