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A248110 Table read by rows: n-th row contains the q successors of n, where q = A007953(n), the digit sum of n in decimal representation. 3
2, 3, 4, 4, 5, 6, 5, 6, 7, 8, 6, 7, 8, 9, 10, 7, 8, 9, 10, 11, 12, 8, 9, 10, 11, 12, 13, 14, 9, 10, 11, 12, 13, 14, 15, 16, 10, 11, 12, 13, 14, 15, 16, 17, 18, 11, 12, 13, 13, 14, 15, 14, 15, 16, 17, 15, 16, 17, 18, 19, 16, 17, 18, 19, 20, 21, 17, 18, 19, 20 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

First 9 rows coincide with triangle A108872;

T(n,1) = n + 1; T(n,A007953(n)) = n + A007953(n) = A062028(n).

LINKS

Reinhard Zumkeller, Rows n = 1..1000 of triangle, flattened

EXAMPLE

.   n |   T(n,*)                                 | A007953(n)

.  ---+------------------------------------------+-----------

.   1 |    2                                     |       1

.   2 |    3,  4                                 |       2

.   3 |    4,  5,  6                             |       3

.   4 |    5,  6,  7,  8                         |       4

.   5 |    6,  7,  8,  9, 10                     |       5

.   6 |    7,  8,  9, 10, 11, 12                 |       6

.   7 |    8,  9, 10, 11, 12, 13, 14             |       7

.   8 |    9, 10, 11, 12, 13, 14, 15, 16         |       8

.   9 |   10, 11, 12, 13, 14, 15, 16, 17, 18     |       9

.  10 |   11                                     |       1

.  11 |   12, 13                                 |       2

.  12 |   13, 14, 15                             |       3

.  13 |   14, 15, 16, 17                         |       4

.  14 |   15, 16, 17, 18, 19                     |       5

.  15 |   16, 17, 18, 19, 20, 21                 |       6

.  16 |   17, 18, 19, 20, 21, 22, 23             |       7

.  17 |   18, 19, 20, 21, 22, 23, 24, 25         |       8

.  18 |   19, 20, 21, 22, 23, 24, 25, 26, 27     |       9

.  19 |   20, 21, 22, 23, 24, 25, 26, 27, 28, 29 |      10

.  20 |   21, 22                                 |       2

PROG

(Haskell)

a248110 n k = a248110_tabf !! (n-1) !! (k-1)

a248110_row n = a248110_tabf !! (n-1)

a248110_tabf = map (\x -> [x + 1 .. x + a007953 x]) [1 ..]

CROSSREFS

Cf. A007953 (row lengths), A062028, A108872.

Sequence in context: A064064 A101504 A125568 * A108872 A147847 A268680

Adjacent sequences:  A248107 A248108 A248109 * A248111 A248112 A248113

KEYWORD

nonn,base,tabf

AUTHOR

Reinhard Zumkeller, Oct 01 2014

STATUS

approved

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Last modified February 28 11:01 EST 2020. Contains 332323 sequences. (Running on oeis4.)